(3R,4R)-4-[(2S,3R)-3-((R)-2-Carboxy-propyl)-5-methoxy-tetrahydro-furan-2-yl]-3-triethylsilanyloxy-pentanoic acid methyl ester 生成 (3S,4R)-4-{(2R,3S,5S)-3-[2-(tert-Butyl-diphenyl-silanyloxy)-ethyl]-5-methyl-6-oxo-tetrahydro-pyran-2-yl}-3-hydroxy-pentanoic acid methyl ester